<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>CSS3背景属性</title>
<style>
	#div1{ width:300px; height:50px; padding:30px; 
		border:30px rgba(0,0,0,0.1) solid; 
      	background:url(qianfeng.jpg) no-repeat; 
		background-origin:padding-box; }
	#div2{ width:300px; height:50px; padding:30px; 
		 border:30px rgba(0,0,0,0.1) solid; 
     	 background:url(qianfeng.jpg) no-repeat;
		 background-origin:border-box; }
	#div3{ width:300px; height:50px; padding:30px; 
		border:30px rgba(0,0,0,0.1) solid; 
     	background:url(qianfeng.jpg) no-repeat; 
	  	background-origin:content-box; }
</style>
</head>
<body>
<div id="div1"></div><br>
<div id="div2"></div><br>
<div id="div3"></div>
</body>
</html>
